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# RAD DATA COMMUNICATIONS
FOM-E3, FOM-T3 (DC POWER, ST CONNECTORS)
Card Type T3 or E3 CSU/DSU
Chipset Unidentified
Wire Type Fiber optic cable
Transfer Rate 34.368Mbps (FOM-E3) or 44.736Mbps (FOM-T3)
Protocol B8ZS, HDB3
Frame Type Unidentified
Data Bus N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| T1 fiber optic | CN1 | T1 signal out via | CN4 |
| receive ST connector | | 75ohm coaxial cable | |
| | | connector | |
|----------------------+-------+---------------------+-------|
| T1 fiber optic | CN2 | Alarm signal | CN5 |
| transmit ST | | connector | |
| connector | | | |
|----------------------+-------+---------------------+-------|
| T1 signal in via | CN3 | DC power in | CN6 |
| 75ohm coaxial cable | | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| » | Signal ground connected to chassis | JP3 | Pins 1 & |
| | ground | | 2 closed |
|---+------------------------------------+-------+-----------|
| | Signal ground not connected to | JP3 | Pins 2 & |
| | chassis ground | | 3 closed |
|---+------------------------------------+-------+-----------|
| » | Coaxial cable length may be up to | JP5 | Pins 1 & |
| | 225 feet | | 2 closed |
|---+------------------------------------+-------+-----------|
| | Coaxial cable length may be up to | JP5 | Pins 2 & |
| | 450 feet | | 3 closed |
|---+------------------------------------+-------+-----------|
| » | Device will transmit All Ones | JP8 | Pins 1 & |
| | Signal when major alarm is | | 2 closed |
| | detected | | |
|---+------------------------------------+-------+-----------|
| | Device will transmit nothing when | JP8 | Pins 2 & |
| | major alarm is detected | | 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODE |
|------------------------------------------------------------|
| Setting | SW4 |
|-----------------------------------+------------------------|
| » | Normal operation | Position 2 |
|---+-------------------------------+------------------------|
| | Local loopback test | Position 1 |
|---+-------------------------------+------------------------|
| | Remote loopback test | Position 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+--------+-----------------------------------|
| PWR | Green | On | Power is on |
|------+--------+--------+-----------------------------------|
| PWR | Green | Off | Power is off |
|------+--------+--------+-----------------------------------|
| LOC | Yellow | On | Device is in local loopback test |
| | | | mode |
|------+--------+--------+-----------------------------------|
| LOC | Yellow | Off | Device is not in local loopback |
| | | | test mode |
|------+--------+--------+-----------------------------------|
| REM | Yellow | On | Device is in remote loopback test |
| | | | mode |
|------+--------+--------+-----------------------------------|
| REM | Yellow | Off | Device is not in remote loopback |
| | | | test mode |
|------+--------+--------+-----------------------------------|
| LOW | Red | On | Electrical input signal is below |
| | | | valid signal level |
|------+--------+--------+-----------------------------------|
| LOW | Red | Off | Electrical input signal is within |
| | | | valid signal levels |
|------+--------+--------+-----------------------------------|
| AIS1 | Yellow | On | All Ones Signal received on |
| | | | electrical interface |
|------+--------+--------+-----------------------------------|
| AIS1 | Yellow | Off | All Ones Signal not received on |
| | | | electrical interface |
|------+--------+--------+-----------------------------------|
| ERR | Red | On | Bit Error Rate of optical |
| | | | interface is 10 -6 or worse |
|------+--------+--------+-----------------------------------|
| ERR | Red | Off | Bit Error Rate of optical |
| | | | interface is better than 10 -6 |
|------+--------+--------+-----------------------------------|
| AIS2 | Yellow | On | All Ones Signal received on fiber |
| | | | optic interface |
|------+--------+--------+-----------------------------------|
| AIS2 | Yellow | Off | All Ones Signal not received on |
| | | | fiber optic interface |
+------------------------------------------------------------+